Laws of motion

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The bicycle gradually slows down and stops due to friction. This demonstrates that objects in motion don't naturally come to rest - external forces like friction and air resistance cause them to stop.

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Due to inertia of rest - the coin tends to remain at rest while the paper is pulled away quickly. The coin has insufficient time to gain horizontal velocity and falls vertically into the glass due to …

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Using Newton's Second Law: F = ma F = 2 kg × 3 m/s² = 6 N The net force acting on the object is 6 Newtons in the direction of acceleration.

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Every object remains at rest or in uniform motion in a straight line unless compelled to change its state by the action of a net force. This law explains the concept of inertia - the tendency of objec…

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Due to inertia of motion (dynamic inertia). The passengers' bodies continue moving forward at the bus's original speed while the bus stops. There's no force to immediately stop their motion, so they j…

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Momentum (p) is the quantity of motion possessed by a moving object. It's calculated as: p = mass × velocity (p = mv) SI unit: kg⋅m/s or N⋅s Momentum is a vector quantity - it has both magnitude and d…

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Using p = mv: p = 0.16 kg × 30 m/s = 4.8 kg⋅m/s The momentum of the cricket ball is 4.8 kg⋅m/s in the direction of its motion.

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The loaded cart has more mass, therefore more inertia. Greater mass means greater resistance to changes in motion. More force is needed to accelerate the loaded cart to the same speed, demonstrating t…